From 1b22a531b9f32609f136eb8aabd9c4707a3acb2f Mon Sep 17 00:00:00 2001
From: Andrew Belt <andrewpbelt@gmail.com>
Date: Sun, 4 Mar 2018 21:38:46 -0500
Subject: [PATCH] include cstdlib in math util header

---
 include/util/math.hpp | 1 +
 1 file changed, 1 insertion(+)

diff --git a/include/util/math.hpp b/include/util/math.hpp
index 455d395e..9eb2e441 100644
--- a/include/util/math.hpp
+++ b/include/util/math.hpp
@@ -2,6 +2,7 @@
 #include "util/common.hpp"
 #include <math.h> // for global namespace functions
 #include <cmath> // for std::isfinite, etc
+#include <cstdlib> // for std::abs, etc
 
 
 // Use a few standard math functions without std::